Dump-car.



c. A. LINDSTR'GM.

DUMP CAR.

APPLICATION FILED JUNE H, 1914- 1,196,960. PatentedSept. 5,1916.

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(gym-m r I b I i i [Mano c. A. LINDSTRUM.

DUMP CAR.

APPLICATION FILED JUNE H. 1914- 1,196,960. PatentedSept. 5,1916.

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CHARLES A. LINDSTROM, OF PTTTSBURGH, PENHSYLVANIA, ASSIGNOR TO PRESSED STEEL CAR COMPANY, OF PTTTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

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Patented Sept. 5, rate,

Application filed June 11, 1914. Serial No. 844,490.

To all whom it may concern:

Be it known that I, CHARLES A. LIND- sTRtiM, a citizen of the United States, residing at No. 138 Stratford avenue, Pittsburgh,

E., in the county of Allegheny and State in Letters Patent of the United States No.'

1,012,260, granted to me Dec. 19, 1911, in which the lading is discharged through an opening in the central portion of the car bottom.

The fact that the lengths and distances between the pockets in the ore docks, where such cars are unloaded, has been for years fixed to correspond with the location of the hatches in the ore ships, has had the effect of limiting the modern ore car of high capacity to the same length as the older ore cars of low capacity. The height ofsuch cars is limited by considerations of safety due to a low center of gravity, and to the undesirability of, when loading the cars at the mines, having to raise the ore by cranes or steam shovels any greater height than is absolutely necessary, which would result in a waste of time and power. The width of such cars is controlled by the limits of clearance due to spacing of tracks, and to the existing condition that cars must have such a width that they can with safety pass-other cars or locomotives on adjacent tracks, even when the body of the car sways laterally, due to side bearing clearance, compression of springs, unevenness of track, etc, The maximum dimensions of width are mainly goverened by the width of the car at the top, which must be such that when the car sways sidewise, the top portions shall not extend beyond the clearance limits.

In view of the above statements oflexisting conditions, a further object of the present invention is to provide a center dump ore car, which, while conforming to the above conditions, and not exceeding any of the above stated limitations, shall have the largest possible load containing capacity,-

the doors are hinged than the usual allowable maximum dimensions, and confining the width at the top of the car within the allowable maximum dimensions; and also dispens ng with the usual'exterior side stakes. It Wlll thus be readily seen that the lateral movement of the top portion of the car due to swaylng will not be greater in such a car than 1n a car with straight sides of the same width, as will be more particularly pointed out in the following description.

I am aware that it is old in the art to which this application pertains to construct a car, having side walls diverging downwardly in order to lessen the tendency of the lading to adhere to the walls, and while this is one of the advantages attained in my construction, the principal advantage is that as ore cars are limited in dimensions in length, width and height on account of the conditions at the docks, and as these cars are required to have a maximum capacity and to discharge the lading without what is known as poking, it becomes necessary to have an unobstructed central door opening of the largest possible dimensions, which in the practice of my invention, I attain by making the body-of the car wider at the bottomthan the usual permissible maximum dimension, and confining the vwidth of the top of the car within the permissible maximum dimenslon.

The invention will be readily understood when considered in connection with the accompanying drawings, wherein Figure 1 is a cross section of a car, taken at about the longitudinal center thereof, showing a preferred embodiment of my in-- vention, and Fig. 2 is a similar cross section showing a modification thereof. v

Referring now in detail to the drawings, 1 indicates the side sills of the car which may be formedof rolled or pressed channel sections having their top and bottom flanges toward the center of inwardly toward the longitudinal center line of the car.

To the top portion 4 of the side walls 3, a modified form of bulb angle bar is secured, for the purpose of adding stiffness to the car side, and to protect it from injury when it is being loaded at the mines. To prevent the la'ding from lodging on the topflange 2, of the side sills 1, shedding strips 5 are secured to the side walls 3 at '6, which shedding strips are stiffened and further supported by gusset members 7, which are secured to the shedding strips 5, and side sills 1.

8 indicates the two drop doors, which are connected by hinges 9 to the lower portions of the shedding strips 5, and extend inwardly substantially to the longitudinal cen-. ter line of the car, the free edges 10 of the doors meeting each other at the longitudinal center line of the car.

The body bolsters 11, may be of any suitable construction and extend from side to side of the car, the rest of the underframe of the car being of any suitable or preferred construction,provided no portion of it projects into or through the central discharge opening of the car.

The car in longitudinal section is substantially V-shaped having sloping end floor sheets 12, 12, and central sloping floor sheet 13, the former being secured to the side sheets 3 by fianges 14:, or in any other suitable manner.

15 indicates the truck as a whole, it being equipped with the usual center bearing plates 16, side bearings 17, and spring plank 18, springs 19 and bolster 20.

Under service conditions such a car sways laterally to some extent, due to the compression of the springs 19, and the clearance space 17 between the upper and lower side bearings 17, which swaying at the top portion or" the sides of the car may amount to three inches more or less, as indicated by dot and dash lines in the figures of the drawings, but as the lower portion of the body cannot sway to the same extent, I take advantage of this and increase the width thereof to nearly the same extent as the amount of lateral movement due to swaying of the top portion of the body.

Fig. 2 illustrates a modified form of my invention, in which, instead of using the shedding strips 5 shown in Fig. 1, I make the lower portion 21 of the side wall 3, slope inwardly and downwardly, and brace it to ,the side sills 1 by suitable bracket members 22 and gusset members 23, the doors 8 being connected by hinges 2 1 to the lower portion 21 of the side walls 3.

The door operating gear may be of any.

suitable type, but preferably that illustrated, described and claimed in two prior patents of the United States, Nos. 1,002,856 and 1,012,260, which were granted to me on September 12, 1911, and December 19, 1911, respectively.

Various changes may be made in the construction of such a car without departing from the substance of the invention as defined in the following claims.

What I claim is:

1. In a dump car construction, a side wall having an outwardly and downwardly diverging upper portion and inwardly inclined lower portion.

2. In a dump car construction, a car body having side walls and end walls, the former having downwardly and outwardly diverging upper portions and inwardly inclined lower portions.

3. In a dump car construction, a car body having end floor sheets'in combination with downwardly and outwardly sloping side walls forming an unobstructed opening'in the car bottom, and doors adapted to close said opening.

4. In a dump car construction, a car body having end floor sheets in combination with wardly diverging upper portions, and inwardly inclined lower portions forming an unobstructed central opening in the car bottom and doors adapted to close said opening.

7 In a dump car construction, a car body having end floor sheets in combination with side walls having outwardly and downwardly diverging upper portions and inwardly inclined lower portions, and drop doors hinged to said lower inwardly inclined portions.

8. In a dump car construction, a car body having end floor sheetsin combination with side walls having outwardly and downwardly diverging upper portions and inwardly inclined lower portions forming an unobstructed opening in the car bottom, and drop doors hinged. to said lower inwardly inclined portions.

9. In a dump car construction, a car body having connected side and end walls which define a discharge opening in the car bottom, said side walls having downwardly and outwardly diverging upper portions and inwardly extending lower portions, and doors for closing said opening.

10. In a dump car construction, a car body having connected side and end walls which define a central dischargeaopening in the car bottom, said side walls having downwardly and outwardly sloping upper portions and inwardly extending lower portions and doors for closing said opening.

11. In a dump car construction, a car body having end floor sheets in combination with side walls havingoutwardly and downwardly diverging upper portions and inwardly inclined lower portions forming an unobstructed rectangular opening in the car bottom, and doors adapted to close said opening.

12. In a dump car construction, a car body having end floor sheets in combination with side walls having outwardly and downwardly diverging upper portions and inwardly inclined lower portions forming an unobstructed central rectangular opening in the car bottom, and 'doors adapted to close said opening.

13. In a dump car construction, a car body having connected side and end walls which define an unobstructed rectangular opening in the car bottom, said side walls having downwardly and outwardly diverging upper portions and inwardly converging lower portions.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES A. LINDsTRoM.

Witnesses FRANK E. MILLER, JAMES MGKEVITT. 

